Nut-lock.



(No Model.)

" Patented Apr. 29, |902.

HOY J. J. PEIFER.

NUT LOCK.

p cation filed Jan.

V y Q Hwnnmn him-W5 UNITED STATES PATENT OFFICE.

GEORGE O. HOY AND JOHN J. PEIFER, OF SHAMOKN, PENNSYLVANIA.

NUT-LOCK.

SPECFIGATION forming' part Of Letters Patent N0. 698,837, dated. April 29, 1902.

Application tiled January 15 v1902. Serial No. 89,914. (No model.)

T0 @ZZ whom, t Wto/,y concern,.-

Beit known that we, GEORGE O. HOY and JOHN J. PEIFER, citizens of the United States,

residing at Shamokin, in the county of Northumberland and State of Pennsylvania, have invented a new and usefulNut-Lock, of which the following is a specification.

This invention relates to nut-locks.

' The object of the invention is to present a nut-lock which will in a simple, practical, and thoroughly efficient manner lockl the nut on the bolt against working loose, as from Vibrations incident to the passage of trains over the rails employing thejsame or in any other position Where it may be employed.

A further object is to present a nut-lock in which the releasing of the nut may be eiected IWithout the necessity of the employment of a particular tool for the purpose.

A further object 1s to present anut-lock which will require no change in the struc-l tural arrangement of the bolt and none in the.

nut other than the provision of a recess` or notch to be engaged by the locking device.-

A further object is to present a nut-lock which shall be thoroughly eective in holding the nut from disconnection from the bolt,

even if only loosely turned thereon.

With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of partsot a nut-lock, as will be hereinafter fully described and claimed.

In the accompanying' drawings, forming a part of this specification, and in which like numerals of reference indicate corresponding parts, there is illustrated a form 'oflembodiment of the inventioncapable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed asto shape, proportion, and exact manner or" assemblage Without departing from the spirit of the invention, and in these drawings- Figure 1l is a viewin side elevation, 1showing a nut-lock applied to position for use. Fig. 2 is a view in sectional elevation. Fig. 3 is a view in front elevation, partly in section. Fig. 4 is a detached detail view in elevation of the washer or disk with which the locking device engages. Fig. 5 is a perspective detail view of the locking device.

Referring to the drawings, 1 designates the web of a rail,- and 2 the fish-plate, through which is passed the usual bolt 3. device is herein shown as applied toa railwayrail joint, Vit is to be understood that it is equally adapted for use in other positions, and as this will be readily understood detailed illustration of adaptation to other ele ments to be held assembled is deemed unnec-v essary.

The v-nut-lock comprises, essentially, a disk or washer 4, adapted, as usual, .to tit over the threaded end of the bolt and to bear against the fish-plate, the saiddisk being provided with a plurality of radially-disposed slots or openings, arranged equidistant from the VWall of the bolt-opening, and in its back with a eountersink or chamber 6, into which the said slots open, the chamber 6 being of less Width than the disk between the bolt-opening and its periphery, thereby to present solid bearing-,surfaces 7 and 8 to rest against the tsh plate, as clearly shown in Fig. 2. The back of the washer is provided near its periphery with a pin or-projection 9, extending at right angles to the said back and adapted to engage an orifice 10 in the outer face of the tish:plate, thereby positively to hold the Washer from turning when the nut l1 is being seated. The nut, which may be either rectangular, as shown, or otherwise, is provided on one face with a recess l2, the opposed walls 13 of which are undercut, preferably in a semicircle, to engage with the sides of the locking device 14', (shown in detail in Fig. 5,) the latterV comprising a piece of resilient-Wire bent to U shape and having one of its legs provided with a toe l5, adapted to be inserted through one of a series of openings 5, thereby` to hold the device securely in position and to permit of its being moved to the position shown in dotted lines in Fig. 2 when the nut is to be removed.

In securing a bolt in position W'ith the nutlock the washer is rst passed over the threaded end of the bolt and the projection 9 seated in the orifice 10 of the sh-plate, and the nut is then turned 'to its seat, care being taken to see that two of the openings While the 5 appear within the recess 12 of the nut, this being readily accomplished by reason of the fact that the said openings are so closely disposed as that a very slight turn of the nut will bring two of them into line with the said recess. The toel of the locking device is now inserted through one of the openings in the washer, .and the device is then bodily turned down, forcing the arms in between the opposed terminals of the walls of the recess, and in passing these terminals the said arms are temporarily compressed; but as soon as clear of them the arms will spring laterally, and thus be securely locked in place, the toe 15 operating in a positive manner to prevent withdrawal of the locking device by a straight pull or of the 'same working loose. When the locking device is to be released for the' purpose ot' removing the nut, it may be moved out of engagement with the walls of the recess thereof by a blow from a hammer from beneath or by the employment of a lever or prize for the purpose. y

As the association of the locking device with the nut is a positive one, it will be seen that the latter will be thoroughlyeffective for holding the nut against accidental separation from the bolt, even if it be but loosely seated thereon, and ythis will be .found of advantage in certain kindsof machinery'whereinthe bolt is allowed ,to have more vor less.

play to obviate binding.

From the foregoing description it will be seen that while the nut-lock of this invention is exceedingly simple of construction it will be thoroughly efficient and durable in` usev and may be readily positionedin place merely by providing one of the membersv to be clamped say a iish-plate--with the orifice 10 and the nut with the recess 12.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters'Patent, is-

l. A nut-lock comprising a washer, a nut provided with a recess having overhanging walls, and a locking device associated with the washer and having spring-arms adapted to engage the said walls.

2. Aunt-lock comprisingawasher provided `with a plurality of openings,.a nut provided with a recess having overhangingwalls, and a locking device having a part to interlock with the openings of the washer and with resilient members to engage the said recess. y

3. A nut-lock comprising a washer provided with a plurality ot openings communicating with a circumferentially-arranged channelin the back thereof, a nut provided with a recess having overhanging walls, and a twomembered locking device adapted to engage with the said Walls, one of the said members being provided with a toe to interlock with one of the openings in the Washer and to project within the said channel.

4. A nut-lock comprising a washer provided with means for holding it against rotation and with a plurality of radially-disposed slots, r

a nut provided in one of its faces with a re cessl having-overhanging Walls, and a locking device having a toe to project within one of the openings and` resilient locking members to engage the saidv walls. f 1

5. Anut-lockcomprisingawasherprovided with means for holding it against rotation and with a plurality of radially-disposed open= ings communicating with a circumferentially-arranged channel in its back, a nut provided in one of its faces with a recess hav.

ing overhanging walls, and a locking device having a toel to project through one of the openings and to lie in the channel and resilient arms to engage the walls of t`h`e said recess. In testimony that we claim thel foregoing as our own we have hereto aftixedour signatures in the presence of two witnesses.

GEORGE O. HOY. JOHN J. PEIFER. Vitnesses:

W. A. CoULsroN, ELF. HAAs. 

